STALKER: Clear Sky	Source: GSC

Stalker: Clear Sky is a prequel to Stalker: Shadow of Chernobyl. The player assumes the role of Scar, a veteran Stalker mercenary who is rescued by Clear Sky, a faction looking to explore the ruins of the Chernobyl power plant and solve the mystery at the heart of the Zone. The Sun Shafts test is part of Stalker's benchmarking suite, which uses DirectX 10 graphics capabilities and can stress even the fastest videocards.

STALKER Clear Sky - Ultra HQ / DX10 / NoAA Sun Shafts Test 1600x1200 Points Ranking Palit HD4870 X2 2GB 39.6 ASUS EAH5770 CuCore/2DI/1GD5/A 20.8 Gigabyte GV-R567OC-1GI 10.9 EAH4890 HTDI/1GD5/A (rev.A) 24.6 EAH4890 HTDI/1GD5/A 24.6 EAH4850 HTDI/512M 16.7 Gigabyte GV-R477D5-512HB 20.7 Gigabyte GV-R477D5-512HB Crossfire 31.5 EAH4770 FML/DI/512MD5/A 17.1 Gigabyte GV-R435OC-512I 2.5 Gigabyte GV-N285OC-2G1 29.1 Gigabyte GV-N26SO-896I 50.2 ASUS ENGTX260 MT/HTDI/896MD3-A 22.8 Gigabyte GV-N26OC896H-GA 24.6 Sparkle GTX260 Core 216 25.1 ASUS ENGTS250 DK 17.3 ASUS EN9600GT DI/512MD3/A 9.26 ASUS EN9400GT DI/1GLP 2.24 Sun Shafts Test 1900x1200 Points Ranking Palit HD4870 X2 2GB 34.3 ASUS EAH5770 CuCore/2DI/1GD5/A 18.6 Gigabyte GV-R567OC-1GI 9.7 EAH4890 HTDI/1GD5/A (rev.A) 21.6 EAH4890 HTDI/1GD5/A 21.6 EAH4850 HTDI/512M 14.8 Gigabyte GV-R477D5-512HB 15.2 Gigabyte GV-R477D5-512HB Crossfire 27.3 Gigabyte GV-R435OC-512I 1.5 Gigabyte GV-N285OC-2G1 25.5 Gigabyte GV-N26SO-896I 43.9 ASUS ENGTX260 MT/HTDI/896MD3-A 20.0 Gigabyte GV-N26OC896H-GA 21.5 Sparkle GTX260 Core 216 19.9 ASUS ENGTS250 DK 13.9 ASUS EN9600GT DI/512MD3/A 8.1 ASUS EN9400GT DI/1GLP 1.5

STALKER Clear Sky tests DX10 performance, and its lighting tests are a good way to test shader performance. Scores for the ASUS EAH5770 CuCore/2DI/1GD5/A videocard here are a little lower than the Geforce GTX 260 videocards here.

STALKER: Call of Pripyat - DX11	Source: GSC

Stalker: Call of Pripyat benchmark is based on one of the ingame locations. The testing process includes four stages, those utilizing various weather and time of the day settings (day, night, rain, bright sun). In order to test your system thoroughly the benchmark is provided with a number of presets and options including different versions of DirectX (9.0, 10.0, 11), screen resolutions, antialiasing etc, all at your disposal.

STALKER Call of Pripyat - Ultra / DX11 / 4xMSAA/HDAO Sun Shafts Test 1600x1200 Points Ranking ASUS EAH5770 CuCore/2DI/1GD5/A 16.3509 Gigabyte GV-R567OC-1GI 10.056 Sun Shafts Test 1900x1200 Points Ranking ASUS EAH5770 CuCore/2DI/1GD5/A 13.8377 Gigabyte GV-R567OC-1GI 8.47

Since this a DirectX 11 benchmark, the only cards that get to play right now are the Radeon 5000 series. This is a punishing test and we're going to need much more powerful GPUs to get smooth gameplay when DX11 graphics are turned up to their fullest.